Hyundai Sonata: Electronic Stability Control (ESC) / Indicator lights
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When the ignition switch is placed to the ON position, the ESC indicator light illuminates, then goes off if the ESC system is operating normally.
The ESC indicator light blinks whenever the ESC is operating.
If ESC indicator light stays on, your vehicle may have a malfunction with the ESC system. When this warning light illuminates have your vehicle checked by an authorized HYUNDAI dealer as soon as possible.
The ESC OFF indicator light comes on when the ESC is turned off.
WARNING
When the ESC is blinking, this indicates the ESC is active:
Drive slowly and NEVER attempt to accelerate. NEVER turn the ESC off while the ESC indicator light is blinking or you may lose control of the vehicle resulting in an accident.
NOTICE
Driving with varying tire or wheel sizes may cause the ESC system to malfunction. When replacing tires, make sure they are the same size as your original tires for this vehicle.
ESC operation
ESC ON condition
When the ignition switch is in the ON position, the ESC and the ESC OFF indicator
lights illuminate for approximately three seconds and goes off, then the ESC is
turned on.
When ope ...
ESC OFF usage
When Driving
The ESC OFF mode should only be used briefly to help free the vehicle if stuck
in snow or mud by temporarily stopping operation of the ESC to maintain wheel torque.
To turn ESC off while ...
Other information:
Hyundai Sonata LF 2014-2019 Owners Manual: System malfunction
When the AEB is not working properly, the AEB warning light ()
will illuminate and the warning message will appear for a few seconds. After
the message disappears, the master warning light ()
will illuminate. In this case, have the vehicle inspected by an authorized HYUNDAI
dealer.
The A ...
Hyundai Sonata LF 2014-2019 Service Manual: Immobilizer Control Unit Repair procedures
Removal
1.
Disconnect the negative (-) battery terminal.
2.
Remove the driver crash pad lower panel.
(Refer to Body - "Crash Pad Lower Panel")
3.
Remove the knee airbag module.
(Refer to Restraint - "Knee Airbag (KAB) Module")
4.
Disconnect the connector of the immobilizer unit and ...
